Improvement in wrenches



UNITED STATES PATENT OFFICE;

HENRY R. SLOAT, OF SLOATSBURG, NEW YORK.

IMPROVEMENT lN WRENCHES.

Specification forming part of Letters Patent No. 162,3l7, dated April20, 1875; application filed February 8, 1875.

To all whom it may concern:

Be it known that I, HENRY R. SLOAT, of Sloatsburg, Rockland county,State of New York, have invented an Improved Monkey- \'Vrench, by meansof which I am able to apply sufficient force to the jaws of the wrenchto hold them firmly to the thing to be screwed or held fast by them; andI do hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the annexed drawing and tothe letters of reference marked thereon, making a part of thisspecification, in which Figure l is a vertical projection of an ordinarymonkey-wrench; Fig. 2, a transverse section of same, and Fig. 3 ahorizontal projection.

Thenature of my invention consists in applying to an ordinarymonkey-wrench the cam a, Fig. 2, with a lever-handle, I), so formed thatit can be raised to a perpendicular position and pressed down, so as tofit snugly to the handle of the wrench, and of sntfioient width tocorrespond with the size of the wrench. To use this improvement I placethe lever, which is attached to the cam a, in a perpendicular positionto the wrench; then screw up the movable jaw of the wrench t0 the objectto which it is desired to attach the wrench; then bring the lever 1)down to the handle of the wrench, when it will be found that the movingof the cam (t has fixed the jaws of the wrench immovably to the objectdesired,

and to release their hold it will be necessary to throw up the lever bto a perpendicular position. The force of the cam a, as is shown in Fig.2 of the drawings, is applied to the end of the screw which controls themovable jaw of the wrench. The cam is firmly held to its position by aniron clasp around the body of the wrench resting upon the iron shouldersof the handle of the wrench, as shown in Fig. 1. The end of the handleor lever of the cam is formed so as to spring shut into the end of thehandle of the wrench, thus keeping it out of the way of the operator.

This cam may be applied to wrenches of various sizes and of differentstyles.

The use of a separate cam and lever constitutes the distinguishingfeature of my invention. It leaves the strength of the wrench unimpairedin every respect, Whereas in wrenches of this kind, where the cam issecured to and operated by the handle of the wrench, there must ofnecessity be a joint between the said handle and the shank of the fixedor stationary jaw, weakening the tool at a point where it should beparticularly strong. Again, in my wrench the gripe on the nut and thelock of the screw-spindle is continuously maintained, whether power isapplied to the handle of the wrench or not, while in a wrench such asreferred to the action of the cam is suspended every time the handle isreleased.

What I claim as my invention, and desire to secure by Letters Patent,is-

In combination with the movable jaw and screw-spindle of amonkey-wrench, the cam a, provided with a separate handle, 0, foroperating and locking it, substantially as and for the purposespecified.

HENRY R. SLOAT.

Witnesses:

G. W. SUFFERN, I. A..SUFFERN.

